Brett Brown was asked about this during his press conference and didn’t seem at all concerned.

Paraphrasing his answer while trying to type as fast as I can:

“Joel wants to be with the team, wants to play. I get his frustration. The medical side and different reasons, I won’t go there. But the (social media) is completely driven out of team and competitiveness, that type of flavor.”

We’ve seen this before. Remember when Joel thought his minutes restriction was “fucking bullshit?” That turned out fine, and Brown wasn’t bothered by that line.